Colloquium Schedule

Colloquium: Thursday, October 22nd, 4:25 PM, Via Zoom

What can we learn from heavy neutron stars?” By Dr. Jacquelyn Noronha-Hostler- University of Illinois. 

The observation of gravitational waves from a blackhole-mystery object binary opens the possibility for heavy neutron stars of 2.5 solar masses (potentially seen in GW190814). If this mystery object is a neutron star of 2.5 solar masses, it poses direct challenges to models of the equation of state. Interestingly, introducing non-trivial structure in the speed of sound sourced by changes in the degrees of freedom (possibly quarks) of ultra-dense matter can resolve this conflict, which may have large ramifications in nuclear and astrophysics. However, for a clear smoking gun signature of the mystery object being a neutron star, one requires a measurement of the tidal deformability that is non-zero. Because the predicted values are very small, a tenfold increase in sensitivity may be needed to test this possibility with gravitational waves, which is feasible with third generation detectors.

Click Here for full announcement

Physics and Astronomy Colloquia are usually scheduled for Thursdays at 4:25 PM via Zoom.If you would like to attend from outside Lehigh,  please contact Prof.  J. Toulouse (jt02@lehigh.edu) for the passcode to the meeting

 

Physics Colloquium Schedule for Fall 2020

Click on Title below for past or upcoming Announcements (where available), and Speaker name for website.        

DateSpeakerAffiliationTitle
September 3---
September 10Brian SwingleUniversity of Mary LandEntangled Butterflies: Chaos in Complex Quantum Systems
September 17Jared KaplanJohn HopkinsNeural Scaling Laws and GPT-3
September 24---
October 1---
October 8Eugene DemlerHarvardNew Perspectives on Quantum Matter: Bringing Together Quantum Simulations and Machine Learning
October 15Kei-Mei FuUniversity of WashingtonSynthesis and characterization of quantum defects: from deep centers in diamond to shallow impurities in ZnO
October 22Jaki Noronha-HostlerUniversity of Illinois What can we learn from heavy neutron stars?
October 29---
November 5Jennifer RossSyracuse University -
November 12Matt Sievert--
November 19Jerome LiciniLehigh University-
December 3Vijay ShenoyIndian Institute of Science-
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